I always shut down my computer for two reasons. One reason is the unnecessary power consumption. With the fear of a power shortage, blackouts and such, I feel it neccessary to conserve our resources.
Secondly, I once lost a motherboard during a power blackout when suddenly the power came back on and surged my system. Now, whenever the power blackouts, I always turn off my computer until the power re-stabilizes, despite my numerous surge protectors. And, I always turn off my computer to protect it from such events during the night when I am done using it.
As for Bootscreens, I tried BootXP, and I hated the 16 colors. So, I'll wait for the 24bit version, if it is even possible to make such a program. I understand it is not. Otherwise, I think that BootXP would have done it.