Well, if you have a reason to be down to Giddings, come back on FM 180.
If you are in the Burton area, go south down almost any of the roads there, and it's a marvel. FM 398 is flat-out nice the whole length.
If you are returning from Brenham, please, please be careful on 105--there are some glorious blue-like-a-pond patches (especially south of the road and west of FM 912)--but, let's not wreck any one while doing so.
Lee Co has primrose and paint to go with the bluebonnets.
Washington Co remains gloriously blue, if with violets and verbena to set off the range of blue and purple.
Waller Co is all over, and depends mightily on which road you are on. 290 west of Hempstead is glorious right to the Brazos, and on past Chappell Hill, but clueless clods make it risky even on weekdays.
6 gets very nice south of Navasota, and stays that way to Hempstead.
A dedicated person can cut east of Hempstead and head north up FM 362. They will be rewarded for this--Just, please, don't wreck people, please (yeah, there are some jaw-droppers). Even better, 362 comes out in glorious color on 105. This will be really coming in by this weekend (Parent's).
Best public access color in Brazos Co right now has to be on 47, airport to 21. Nice wide shoulders both sides, good verges; good backdrops for photo taking, and a variety of colors.
Or, that's what I've seen so far.