round Icons back to square

[rulezyx]

Hello,

aside from the player portraits there are a few round icons in the default UI which I want to change back to square,

but that cant be done by just replacing the Icon-Textures (Folder).

Basically I want to change them back to square so they match my frames.

(Left)Example with default shape (round)
(Left)Example with edited shape (square)

I was able to locate the GroupFinder Icons but for most other frames like the TalentFrame,

example: PlayerTalentFrameSpecializationSpellScrollFrameScrollChildAbility1Icon

I get a "a nil value" error.

Example Round-Icons TalentFrame

GroupFinderFrameGroupButton1Icon:SetTexCoord(0.85, 0.15, 0.15, 0.85)
GroupFinderFrameGroupButton1Icon:SetScale(0.70)
GroupFinderFrameGroupButton2Icon:SetTexCoord(0.85, 0.15, 0.15, 0.85)
GroupFinderFrameGroupButton2Icon:SetScale(0.70)
GroupFinderFrameGroupButton3Icon:SetTexCoord(0.85, 0.15, 0.15, 0.85)
GroupFinderFrameGroupButton3Icon:SetScale(0.70)

I never reshaped icons before and I am unsure if some of these textures are protected but maybe someone knows a better solution for this.