Order your hand made 13w3 to VGA cable with embedded circuit to separate out the vertical and horizontal sync from green and supply to VGA. This means you can connect your NeXT color, color turbo and dimension to VGA CRT/LCD's that don't support sync on green!
Get them now/fast, I am building some for myself and others on this forum, but I will probably not feel like building these long term (I lose interest fairly quickly, as the work gets tedious). Asking $99 plus shipping, as it costs about $20 in materials and 2-3 hours labor. PM me for my email address to send paypal.