I want use marquee tag with color changing display in my page in text of "Click here.." i have no idea about this coding
so, any one guide me how can it be possible ?

If I understood correctly, you want your marquee'd text to be colored, correct? If so, you would type something like this:

<marquee><font color="WhateverColorCode">Text</font></marquee>

If I didn't understand your question correctly please tell me  ;D