Describe the bug
A clear and concise description of what the bug is.

23x Usage: self:SetVertexColor(color [, a])
[string "=[C]"]: ?
[string "=[C]"]: in function SetVertexColor' [string "@Interface/SharedXML/Backdrop.lua"]:430: in function SetBackdropBorderColor'
[string "@Interface/AddOns/ElvUI_WindTools/Modules/Social/ChatBar.lua"]:109: in function <...ce/AddOns/ElvUI_WindTools/Modules/Social/ChatBar.lua:106>
[string "=(tail call)"]: ?

Locals:
(*temporary) = "Usage: self:SetVertexColor(color [, a])"

To Reproduce
Steps to reproduce the behavior:
i just hover over the color icons with my mouse and the error came up.

Expected behavior
A clear and concise description of what you expected to happen.

I expected it to work without a error.

Screenshots
If applicable, add screenshots to help explain your problem.

Information (you can find these in [WindTools-Information]):

• Addon Version: ElvUI_WindTools-3.01.zip
• ElvUI Version 13.01
• WoW Build 10.0.0.46597

Additional context
Add any other context about the problem here.

If you still have this problem, reopen the issue.

Did you test only with ElvUI and ElvUI_WindTools?
Please use /wtdebug on first.