Each gist provides now the RNArtist script and an SVG output. You can use the SVG in your favorite vector graphics editor.

rnartist.kts

import io.github.fjossinet.rnartist.core.*

 rnartist {
	ss {
		 bn {
			 value = "(((..(((....))).)))...(((..(((..(((..(((....))).)))...(((..(((....))).)))...((((((..(((....))).)))..(((....))).)))(((..(((....))).)))..))).)))...((((((..(((....))).)))..(((....))).)))(((..(((....))).)))"
		}
	}
	 theme {
		 details {
			 value = 3
		}
		 details {
			 value = 2
			 type = "helix"
		}
		 color {
			 value = "#731dd8"
			 type = "A"
		}
		 color {
			 value = "#ffffff"
			 type = "a"
		}
		 color {
			 value = "#48a9a6"
			 type = "U"
		}
		 color {
			 value = "#ffffff"
			 type = "u"
		}
		 color {
			 value = "#e4dfda"
			 type = "G"
		}
		 color {
			 value = "#000000"
			 type = "g"
		}
		 color {
			 value = "#d4b483"
			 type = "C"
		}
		 color {
			 value = "#000000"
			 type = "c"
		}
		 line {
			 type = "N"
			 value = 3.0
		}
		 line {
			 type = "interaction_symbol"
			 value = 4.0
		}
	}
}

rnartist.svg