I pasted this at the bottom of the newest LM Earlingas ui skin before the </opt>, along with the appropriate images (duh) and after playing with it for 20 minutes I still cannot even get the skin to be an option in-game.
Code:
<!-- Images -->
<Mapping ArtAssetID="LetterBoxBottom" FileName="letterbox_bottom.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_10pips" FileName="fervor_12_Pips_10pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_11pips" FileName="fervor_12_Pips_11pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_12pips" FileName="fervor_12_Pips_12pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_1pips" FileName="fervor_12_Pips_1pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_2pips" FileName="fervor_12_Pips_2pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_3pips" FileName="fervor_12_Pips_3pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_4pips" FileName="fervor_12_Pips_4pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_5pips" FileName="fervor_12_Pips_5pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_6pips" FileName="fervor_12_Pips_6pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_7pips" FileName="fervor_12_Pips_7pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_8pips" FileName="fervor_12_Pips_8pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_9pips" FileName="fervor_12_Pips_9pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_12_Pips_empty" FileName="fervor_12_Pips_empty.tga"></Mapping>
<Mapping ArtAssetID="fervor_5_Pips_1pips" FileName="fervor_5_Pips_1pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_5_Pips_2pips" FileName="fervor_5_Pips_2pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_5_Pips_3pips" FileName="fervor_5_Pips_3pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_5_Pips_4pips" FileName="fervor_5_Pips_4pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_5_Pips_5pips" FileName="fervor_5_Pips_5pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_5_Pips_empty" FileName="fervor_5_Pips_empty.tga"></Mapping>
<Mapping ArtAssetID="fervor_9_Pips_1pips" FileName="fervor_9_Pips_1pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_9_Pips_2pips" FileName="fervor_9_Pips_2pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_9_Pips_3pips" FileName="fervor_9_Pips_3pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_9_Pips_4pips" FileName="fervor_9_Pips_4pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_9_Pips_5pips" FileName="fervor_9_Pips_5pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_9_Pips_6pips" FileName="fervor_9_Pips_6pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_9_Pips_7pips" FileName="fervor_9_Pips_7pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_9_Pips_8pips" FileName="fervor_9_Pips_8pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_9_Pips_9pips" FileName="fervor_9_Pips_9pips.tga"></Mapping>
<Mapping ArtAssetID="fervor_9_Pips_empty" FileName="fervor_9_Pips_empty.tga"></Mapping>
<PanelFile ID="toolbar">
<Element ID="ToolbarField" X="0" Y="900" Width="1024" Height="90" Detach="1">
<!-- You can change the line above for other resolutions: -->
<!-- for 1024x768: <Element ID="ToolbarField" X="0" Y="678" Width="1024" Height="90" Detach="1"> -->
<!-- for 1280x1024: <Element ID="ToolbarField" X="128" Y="934" Width="1024" Height="90" Detach="1"> -->
<!-- for 1440x990: <Element ID="ToolbarField" X="208" Y="900" Width="1024" Height="90" Detach="1"> -->
<!-- for 1680x1050: <Element ID="ToolbarField" X="328" Y="960" Width="1024" Height="90" Detach="1"> -->
<Element ID="ToolbarFieldMain" X="0" Y="0" Width="1024" Height="90"></Element>
<Element ID="LevelMeter" X="107" Y="76" Width="732" Height="11">
<Element ID="LevelMeterFill" X="0" Y="0" Width="732" Height="11">
<Element ID="LevelMeter_BonusMeter" X="0" Y="0" Width="732" Height="11">
</Element>
</Element>
<Element ID="ToolbarButton_LevelUpXP_TutorialHighlight" X="1" Y="1" Width="1" Height="1"></Element>
<Element ID="ToolbarButton_Experience_TutorialHighlight" X="0" Y="1" Width="1" Height="1"></Element>
<Element ID="LevelMeterText" X="0" Y="0" Width="1" Height="1"></Element>
</Element>
<Element ID="AutoAttackIndicatorButton" X="1" Y="1" Width="1" Height="63"></Element>
<Element ID="ViolentModeIndicator" X="1" Y="1" Width="1" Height="1"></Element>
<Element ID="ToolbarButton_AutoAttack_TutorialHighlight" X="1" Y="1" Width="1" Height="1"></Element>
<Element ID="GamePlay_FervorPipDisplay" X="2" Y="77" Width="100" Height="10"></Element>
<Element ID="GamePlay_AimPipDisplay" X="2" Y="77" Width="100" Height="10"></Element>
<Element ID="ToolBarButton_MainMenu" X="88" Y="44" Width="1" Height="1"></Element>
<Element ID="ToolbarButton_Crafting" X="158" Y="44" Width="1" Height="1"></Element>
<Element ID="ToolbarButton_Social" X="228" Y="44" Width="1" Height="1"></Element>
<Element ID="ToolbarButton_Accomplishment" X="298" Y="44" Width="1" Height="1"></Element>
<Element ID="ToolBarButton_Quest" X="368" Y="44" Width="1" Height="1"></Element>
<Element ID="ToolbarButton_Journal" X="438" Y="44" Width="1" Height="1"></Element>
<Element ID="ToolbarButton_Inventory" X="311" Y="41" Width="1" Height="1"></Element>
<Element ID="ToolBarButton_Inventory2" X="281" Y="41" Width="1" Height="1"></Element>
<Element ID="ToolBarButton_Inventory3" X="251" Y="41" Width="1" Height="1"></Element>
<Element ID="ToolBarButton_Inventory4" X="221" Y="41" Width="1" Height="1"></Element>
<Element ID="ToolBarButton_Inventory5" X="191" Y="41" Width="1" Height="1"></Element>
<Element ID="Toolbar_Quickslot" X="1" Y="37" Width="420" Height="35"></Element>
</Element>
</PanelFile>
It should use everything from the LM Earlingas UI skin, but a different letterbox and fervor bar.