Lividum going Malibu (Or.. spiders sure are weird)

Since it's evidently weird lividum day.. I just took a peek at my spiders and I noticed my lividum is out sunning himself! I wish I had a camera handy; he's completely out of his burrow and has his whole body angled at the sun; butt in the air and all. Has anyone else ever seen a T do that?
Spiders really do some bizarre stuff.. My aureostriata decided to dump her eggsac last weekend. Does she take up the surrogate eggsac I made to help reduce her stress? Heck no! Why use a piece of cotton wadding when you can roll around the fuzzy left in your tank for dinner!?
So if a lividum tans, does that make him a darker blue? hahaha