Unpainted

http://www.tf2outpost.com/trade/4771433 (0.88 ref)

http://www.tf2outpost.com/trade/6204651 (1 ref)

http://www.tf2outpost.com/trade/6232078 (1.16 ref)

Painted

http://www.tf2outpost.com/trade/5937414 (1.11 ref painted Zeph. Greed) ~0.55 ref

http://www.tf2outpost.com/trade/6227083 (1.33 ref painted Colour No. 216-...) ~1 ref

http://www.tf2outpost.com/trade/6015515 (1.66 ref painted Indubitably Green) ~1 ref

http://www.tf2outpost.com/trade/6197014 (2 ref painted Tinge) ~1 ref

As shown above, the unpainted ones that are selling hit a maximum of 1 ref. There's an unsold one at 1.16 ref. Very supportive of suggested price range.

For the painted ones, we will assume that paint adds 85% of its own price to the item, or until it is twice the items price, whichever is lower. This is according to backpack.tf/Faq. This would mean the bomber painted Zeph. Greed is assumed to be 0.55 ref. For those painted Green and Color 216, doing the same thing will equate them to 1 ref. For Tinge, since it's worth more than a key, it can only go to a maximum of twice the bomber's price, equating its value to half of 2 ref which is 1 ref.

Therefore the mean price should be 1 ref as shown and hence put as suggested price.