Both the Schempp-Hirth Cirrus, the Grob Tutor, and other "Got To Be Whites" types might be now be able to be made more conspicuous using current colour paint, such as that now being found on Cirrus Aircraft's SR20 and SR22's.
I hope GRP/Fibreglass manufacturers and users, e.g. AEF, Clubs, may show an interest in exploring the possibilities.
Cant seem to load it here, so uploaded photo of another great example colour scheme to
http://www.upintotheblueagain.*************/
or Google "2009 SR22 N877KC photo"