You could add black grip panels or a sleeve to cover most of that up. Add in your UTL and it might just end up looking decent.
Regarding the "hated .40". PMC 40D ammo is the best kept secret around. 165gr bullet at 989 fps. It just .... thuds. No bite, no bark, no Holly Hannah that's hot (Lawman 53955) just a pleasant thud. I think a lot of shooter's would rethink their feelings towards the 40 after trying that ammo.
Anyways, you got a great deal so have some fun with it!