Sample #1 (Pictured Above)
I suggest buying 1 skein/card/spool of each color.
Pepper Pot Silk
013 Pink Lemonade: Lightest pink wings
022 Cotton Candy: Medium pink wings
057 Eggnog: Background, & wing detail cream
126 Paprika: Wing outline, dark red
176 Robin's Egg: Wing detail, blue
252 Patio: Wing outline, darkest red
Silk Lamé Braid
SL02 White: Wing detail
SL18 Surf Blue: Wing detail, lightest blue
SL154 Misty Green: Wing detail, lightest green
Impressions
2075 Coral Red: Wing detail, coral
Essentials
567 Cantaloupe: Wing detail, orange
677 Coast: Body, dark wing detail
686 Lichen: Wing detail, seafoam
Stitch Recommendations
Heart Bargello: Background
Diagonal Mosaic: Wings
Satin Stitch: Wing Detail
Tent/Reverse Tent*: Everything else
*On this butterfly, I used reverse tent on the left antenna, as I often like to reverse the direction of the tent stitch in order to follow the path of a line more closely!

Sample #2
I suggest buying 1 skein/card/spool of each color.
Pepper Pot Silk
013 Pink Lemonade: Lightest pink wings
034 Champagne: Background
109 Steel: Wing detail
134 Quartz: Medium pink wings
190 Fondant: Wing detail, cream
224 Candy Apple: Wing detail, red
Silk Lamé Braid
SL90 Barely Pink: Background
Vineyard Silk
C-168 Claret: Outlines
Impressions
1106 Orange Brown: Wing detail, orange
Essentials
556 Valentine: Wing detail, red
644 Wall Street: Body
686 Lichen: Wing detail, seafoam
706 Cricket: Wing detail, green
803 Early Sea: Wing detail, blue
Stitch Recommendations
Hesitation: Background
Tent: Everything else