What woods did you use..???, I see one full of borer holes and those tend to come out a treat, some people don't go much for that sort of thing but, anyone that like a handmade pen full of character, ain't going to get it with any of the common burls and "perfect" wood blanks, no sir...!
I'm always putting those sort of blanks aside and when I think of stabilizing with colours, I sure have lost to pick from, far too many, to be correct so, I keep selecting a big hand full and throw than in the "pot", adding a bit of salt, pepper, this and that and, I come up with some "interesting" results also.
I like what you did, and they will make some "interesting" pens, I wouldn't mind to see the results, if you don't mind, thanks...!
Cheers
George