What do you have in mind for the style and theme of the t-shirt?
One design which can be used by both men and women. T-shirt in white and grey (Hex: D6D8D8)
Logo should be both in front and on the back of the t-shirt. Different versions of the logo is attached, so choose the one which gives the best overall design. Different version can be used on the back/front. Fading pattern has to be included. Maybe starting at the lower part of the t-shirt and ending somewere in the middle.... Here other suggestions are welcome.
T-shirt should be white and logo/pattern should be Hex: D6D8D8