Is there a way to make the background color of the circle stay white?

Sure, create your own radiobutton widget, one made of two radio buttons, one with activecolor specified, one without -- check cpan, somebody might have already done it

Or is this some kind of compatibility issue with Tk running on Windows (I'm running Tk 804.29 with ActivePerl 5.12.1 on Win XP)?

I doubt it, but I can't confirm (I only have win32)

A WxPerl radiobutton does not seem to give me this problem.

Not exactly relevant :) wxRadioButton doesn't have an activecolor option either, and not being able to set color for the check/radio is considered a bug #10137 ([MSW-XP] wxRadioButton::SetForegroundColour doesn’t work) – wxWidgets

In reply to Re: Does the active background color of the circle of a Tk radio button have to be the same as that of the textual string? by Anonymous Monk
in thread Does the active background color of the circle of a Tk radio button have to be the same as that of the textual string? by ZJ.Mike.2009

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.