To clear my point, I have included a sample. When I changed the TabStyle to OneNoteStyle instead of default (3D) the ActiveTabColor in designer changed to Color.FromArgb( 187, 194, 214 ). Then instead of the color that I specified I get the above color (blue-grayish). I tried to change this in designer but doesn''t matter what I change to as long as the TabStyle is OneNoteStyle I get this color instead of my dark orange color (Color.FromArgb( 248, 203, 080 )). I don''t think that was a problem before in version 3.3
ActiveTabColorSample.zip