As far as looks go, I don't see how that green tube looks better than the violin case. At least with the violin case, you can blame the looks on it being a factory part.
Maybe if it was low gloss black or polished aluminum it would fit in better.
97 T-Bird LX 4.6 - 66k miles
94 Supra TT Auto - street/strip car
04 Crown Vic Police Interceptor - Brenda's car
95 T-Bird LX 4.6 - fully optioned, owned 15 years
96 Cougar XR-7 4.6- Brenda's car, owned 11 years
88 T-Bird 3.8 - first T-Bird, owned 5 years