Sublime Text Syntax Highlighting Customization

Question

I am using Sublime Text 3 with NASTRAN-Textmate-Bundle (https://github.com/bguest/NASTRAN-Textmate-Bundle) which defines the syntax for this finite element analysis language. I am attempting to color code the various entity types using a custom Monokai.sublime-color-scheme file.

The syntax is defined as follows in NASTRAN.tmLanguage:

<?xml version="1.0" encoding="UTF-8" ?>
<plist version="1.0">
    <dict>
        <key>uuid</key>
        <string>B105B642-00BE-4057-AB54-4D90188976DF</string>
        <key>patterns</key>
        <array>
            <dict>
                <key>include</key>
                <string>#case_control</string>
            </dict>
        .
        .
        </array>
        .
        .
        <key>repository</key>
        <dict>
            <key>sol_types</key>
            <dict>
                <key>captures</key>
                <dict>
                    <key>1</key>
                    <dict>
                        <key>name</key>
                        <string>keyword.sol_types.nastran</string>
                    </dict>
                </dict>
                <key>match</key>
                <string>(\bSOL (101|SESTATIC|103|SEMODES|105|SEBUCKL|106|NLSTATIC|107|SEDCEIG|108|SEDFREQ|109|SEDTRAN|110|SEMCEIG|111|SEMFREQ|112|SEMTRAN|114|CYCSTATX|115|CYCMODE|116|CYCBUCKL|118|CYCFREQ|128|SENLHARM|129|NLTRAN|144|AESTAT|145|SEFLUTTR|146|SEAERO|153|NLSCSH|159|NLTCSH|190|DBTRANS|200|DESOPT|400|NONLIN|600|SESTATIC|700|NLTRAN|))</string>
            </dict>
        </dict>
    </dict>
</plist>

My custom Monokai.sublime-color-scheme in Packages/User contains the following:

{
    "name": "Monokai",
    "rules":
    [
        {
            "name": "Nastran Case Control",
            "scope": "keyword.sol_types.nastran",
            "foreground": "var(cyan)"
        },

    ]
}

However, Sublime does not recognize this as nothing gets colored cyan.

I have tried different entity types (sol_nastran is an example of many) and various combinations of "keyword.scope.language" that I could think of.

Seems like this should be very simple, but I must be missing something very obvious. I apologize if that is the case -- I am a structural analyst, not a coder.

Thank you in advance for your help,

Michael