How to change admin color

can someone help me how to figure out this, i do anything and i follow all the instruction what they made but it doesn't work on my forum! i dont know why can some one help me or give me some tips how to change my admin color into red else anykind of color. could someone here can help me about this pleasee i was confuse about this i realy follow all the tips and instruction how it works but still not working on my Admin name huhuh.. please help me thanks

please edit your first post and change the title of the topic

thanks!

Users take on the colour of their default group.

Admin panel
Manage Users
your name
In the drop box on the right choose Groups
Click the text that says 'Make group default for member' for the registered users.

OR manage groups
Click settings next to the admins and change the colour of that group to the same as the registered users.
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sorry im realy sorry

where is manage users i am searching it for more than an hour make a DAMN SCREENSHOT!