# GMT Themes

GMT offers 3 built-in themes (classic, modern, and minimal). Classic theme is the default for classic mode and modern theme is the default for modern mode. You can also create and use your own themes by compiling files of desired settings and placing them in your GMT user themes directory (usually ~/.gmt/themes) and naming them theme.conf, where theme is any valid string. The GMT_THEME parameter is used to set the current theme. The table below lists the default settings for the classic, modern, and minimal themes.

## Default settings for built-in themes

Parameter | Classic | Modern | Minimal
--- | --- | --- | ---
FONT_ANNOT_PRIMARY | 12p,Helvetica,black | auto,Helvetica,black | auto,AvantGarde-Book,black
FONT_ANNOT_SECONDARY | 14p,Helvetica,black | auto,Helvetica,black | auto,AvantGarde-Book,black
FONT_HEADING | 32p,Helvetica,black | auto,Helvetica-Bold,black | auto,AvantGarde-Book,black
FONT_LABEL | 16p,Helvetica,black | auto,Helvetica,black | auto,AvantGarde-Book,black
FONT_SUBTITLE | 18p,Helvetica,black | auto,Helvetica-Bold,black | auto,AvantGarde-Book,black
FONT_TAG | 20p,Helvetica,black | auto,Helvetica,black | auto,AvantGarde-Book,black
FONT_TITLE | 24p,Helvetica,black | auto,Helvetica-Bold,black | auto,AvantGarde-Book,black
FORMAT_GEO_MAP | ddd:mm:ss | ddd:mm:ssF | ddd:mm:ss
MAP_ANNOT_MIN_SPACING | 0p | auto | auto
MAP_ANNOT_OFFSET_PRIMARY | 5p | auto | auto
MAP_ANNOT_OFFSET_SECONDARY | 5p | auto | auto
MAP_EMBELLISHMENT_MODE | manual | auto | auto
MAP_FRAME_AXES | WESNZ | auto | auto
MAP_FRAME_PEN | thicker,black | auto | auto
MAP_FRAME_TYPE | fancy | fancy | plain
MAP_FRAME_WIDTH | 5p | auto | n/a
MAP_GRID_PEN_PRIMARY | default,black | auto | thinner,lightgrey
MAP_GRID_PEN_SECONDARY | thinner,black | auto | thinnest,lightgrey
MAP_HEADING_OFFSET | 18p | auto | auto
MAP_LABEL_OFFSET | 8p | auto | auto
MAP_POLAR_CAP | 85/90 | auto | auto
MAP_TICK_LENGTH_PRIMARY | 5p/2.5p | auto | auto
MAP_TICK_LENGTH_SECONDARY | 15p/3.75p | auto | auto
MAP_TICK_PEN_PRIMARY | default,black | auto | auto
MAP_TICK_PEN_SECONDARY | thinner,black | auto | auto
MAP_TITLE_OFFSET | 14p | auto | auto
MAP_VECTOR_SHAPE | 0 | 0.5 | 0.5