Icons
These are images being used in AddImage statements in the vanilla code:
Blank CategoryTitleFrameDivider Checkbox32px_Off Checkbox32px_On CollapseArrow1 CollapseArrow2 CraftingCategory_ CraftingCategorySelectionActive CraftingItemsFrame CraftingNoItemsFrame CraftingTabDivider CraftingWindowSectionBackground CraftingWindowSectionHeader CraftingWindowWeaponTypeHighlight EquipSlotBG ExpandBackgroundGradient FullBorder GreyOutImage HorizontalWindowDivider LargeTextFieldUnsliced LeaderIcon LockedAbilityIcons NextArrow Object ObjectPictureFrame PageHighlightFrame PartialBorder QuestCompletionRibbonDesign ReleaseButtonBase ScrollParchmentUIWindow SearchBarFrame SectionBackground SectionDividerBar SectionDividerBar_Half SectionDividerFrames_nobackground Skill_(Skillname?) SkillIconsFrame SkillsCategoryTitleFrame SkillsSelectionFrame_Hover SkillTrackerFrame TabFrameBackground TabSelectionBackground Textbox_Major_Elements TextBoxBG ThinFrameBackgroundExpand TitleBackground VerticalWindowDivider WindowBackgroundFancy