Bookings and announcements can't be created through frontend. Only web apps can be created from inside the secure zone - http://kb.worldsecuresystems.com/733/bc_733.html#main_Adding_ability_for_CUSTOMERS_to_CREA TE.2C_EDIT_and_PUBLISH_web_apps
Web apps can be setup to mimic the announcement module, so you're in luck. As for bookings, that can't be done.
With login forms colors, that's requires simple CSS change. Firebug the form, see which color code is applied to it and change the color code.
Way above the game and not easy to do for everyone but I got web apps and full booking and manageable with a web form and web apps only :)
It can be done but it's a++ stuff, but it's defo doable, I love web apps.
Can only think what I'll be doing when they new web apps finally launch in the future muhahaha.
Share the knowledge?
It would be a bigger document then any I have wrote on these forums. Would be like a paid video guide guide on a guide site :) and some still would not get it.
Would need high level jquery knowledge, ajax knowledge and full in and outs of web apps and web forms.
Just stating to Mario that while way beyond being out of the box it is at least possible to make bookings without the booking form.