Fingerprintglo is a more accurate name. I gave up on keeping it clean by convincing myself it adds "character". I love a good fireglo and that walnutglo (i think thats what the twins there are?) is pretty nice too! Theres no bad color for a Ric !
As for mods to the amp....
First, all the caps and resistors were replaced. Easy enough, something that should be done to any 30 year old amp. Also all the wires replaced with teflon wrapped silver wire.
Otherwise most of the mods were done to the preamp inputs. The Bass channel unput was reworked to be more like early 60's bassman heads. I messed with the mix resistors till I was happy with a good sound on each input. I don't remember the values now, might be 1.5 meg ohms..? I padded one input on the jacks on the Bass channel also, with some electrical tape on the prong of the jack, so one is lower gain and one higher. Also, the Grid load resistor is soldered right to the pin to prevent extra radio noise, ala Spinal Tap. The "Normal" channel was redone with some hotter values, making the whole signal hotter. Again, not sure what I had put in there...? Gosh, I wish I was more technical.

There is only one input on this channel, and there is no mix resistor. A wire goes straight to the grid load resistor soldered right to the pin, then to ground. This REALLY brings it alive. The channel has also a bright switch, which when engaged is... wow. It cuts like a razor blade. Pretty cool. I don't really use that channel much, though. It goes into a heavy distortion pretty easy (sounds pretty awesome with guitar). Its basically just a really hot signal.
The other thing I've done, internally, is replace the output transformer. It had a 50 watt old tired thing in there. I replaced it with a 100 watt dixie sound works (I think thats the brand??!). Seemed to do the trick. Loads more headroom on the Bass channel now. Way more punch.. and I never have to worry about heating the transformer up too much. It runs pretty cool.
Add some JJ preamp tubes which I really like, and some NOS US milspec output tubes that a friend gave me.
It all runs into a Weber ceramic Mighigan 100 watt speaker with aluminum dome. Perfect combination I think.
I'm not really technical when it comes to electronics... I just messed with bits and had lots of help!
Thanks for the interest! Hope no one falls asleep reading it...
I'll post some more pictures of the amp if anyone is interested?