Spot Maps showing as white markers in ATAK

[CoryFoy]

Describe the bug
When sending a spot map to ATAK the marker is showing as a white dot instead of the configured color

To Reproduce
Steps to reproduce the behavior:

1. Add a spot map with point dropper
2. Send it to ATAK

Smartphone (please complete the following information):

• Version: [e.g. 22] 1.6.1
• App Store or TestFlight?: App Store

Additional context
The issue stems from two problems:

1. Point Dropper is setting the group for the iconset path to Spot Map instead of b-m-p-s-m which is a special case for iconsets.

2. The color attribute was not being appended when sending a marker, and then TAK Aware was picking up the lack of the color node from the UDP listener and updating the marker locally to not have the color