These drop-dead gorgeous cards are worth every penny. Importantly, the faces are normal, so these
can be mixed into packets and other tricks more easily. Obviously, Si-Stebbins-based tricks are in
order, and the range of tasteful colors produced, from mint to violet, rose, tangerine, goldenrod,
pale lime, olive green, aqua and turquoise in the process is simply stunning. There are already a
few packets and decks with bright, strong colors (if you prefer them try the Bicycle Rainbow Playing
Cards), so the broad range of tasteful, sometimes paler and more subtle tones is particularly
refreshing. You can also do color changes in which colors turn pale or stronger, rather than merely
completely changing colors. I used Spectrum to DIY my first Invisible Deck, and the result is sooo
beautiful! You may want to avoid tricks in which the back color is used to try to identify chosen
cards, as the colors may be seen by spectators as providing information (even though the very
gradual change in the spectrum means there are multiple consecutive cards with roughly the same
color, making this kind of identification difficult). Spectrum are also not suitable for DIY
marking, as it is difficult enough to find exactly the right pen color for red and blue 808’s, let
alone 52 shades! I particularly like to have a couple extra Spectrum decks on hand for splitting and
gaffing, as the color flexibility creates many possibilities. Any color name with letters that are a
multiple of three (like purple, turquoise, violet, tangerine, goldenrod, etc.) can be used for a
unique variation on Spell Purple. Uniquely colored flap cards are also very cool. An ideal base for
making Svengali decks where the back color, not the face, is the surprise.