提示词库 · 填色页
十个可打印线稿的实测提示词——为幼儿设计的粗线条简单场景、细致的绘本世界，以及为成人设计的精细曼陀罗图案。每张卡片都展示未经修饰的输出，可直接送去打印。
三个短语几乎能搞定一切：「黑白线稿填色页」「无阴影、无灰度、无填充」和「纯白背景」。不加这几句，模型会好心地加上柔和的灰色调和投影，而带阴影的页面根本没法填色。稳妥的结构是：「黑白线稿填色页，[包含两三个元素的场景]，[线条粗细]，干净的闭合轮廓线，无阴影，纯白背景」。线条粗细是最关键的设置——幼儿用「粗线条，大块简单形状」，学龄儿童用「中等细节」，成人页面用「精细线条」。
如果打算把文件交给孩子在数字填色App里使用，请加上「闭合轮廓线」：轮廓线上的缺口会让油漆桶填充工具溢出整个页面。按3:4竖版打印，页面能直接适配A4或美国信纸尺寸，无需裁剪。以下十张全部是在BananaBanana上生成的未经修饰的输出——按Lite每张$0.03计算，一本30页的主题填色书打样成本不到一美元。
下面每张图片都是所在卡片提示词的未修输出——没有从几十次尝试里挑好的，也没有修图。模型徽标标明了它由什么生成、花了多少钱。
Black and white line art coloring page of a friendly unicorn standing in a meadow of large simple flowers, a rainbow arcing behind it and three fluffy clouds above. Thick bold outlines, large open shapes for small hands, no shading, no grey, pure white background.
Black and white line art coloring page of a cheerful long-necked dinosaur eating leaves from a tall palm while a small spiky dinosaur watches from behind a fern, volcano outline in the distance. Thick bold outlines, simple closed shapes, no shading, pure white background.
Black and white line art coloring page of a coral reef with a smiling sea turtle, three striped fish, waving seaweed and a scattering of bubbles rising to the surface. Medium-weight outlines with a few decorative patterns inside the coral, no shading, pure white background.
Black and white line art coloring page of a village of mushroom houses with round doors and shuttered windows, a winding stone path, a tiny bridge over a stream and fireflies in the air. Storybook detail with medium linework, no shading, pure white background.
Black and white line art coloring page of a rocket blasting past a ringed planet, two smiling stars and a crescent moon, with a small astronaut waving from the porthole. Thick playful outlines, large simple shapes, no shading, pure white background.
Black and white line art coloring page of a symmetrical butterfly whose wings are filled with mandala patterns — concentric petals, teardrops and fine dots — framed by a circular border of leaves. Medium-fine linework, perfectly mirrored, no shading, pure white background.
Black and white line art coloring page of a thatched cottage with climbing roses around the door, a picket fence, a watering can on the path and hollyhocks along the wall. Detailed storybook linework with varied textures, no shading, pure white background.
Black and white line art coloring page of a chunky tractor with big treaded wheels beside a barn, three hens pecking in the foreground and a haystack behind. Thick bold outlines, large open areas, no shading, pure white background.
Black and white line art coloring page of a cheerful boxy robot holding a wrench in a workshop, surrounded by gears, a toolbox and a shelf of spare parts. Medium-weight outlines, clear closed shapes, no shading, pure white background.
Black and white line art coloring page of an intricate floral mandala with eight-fold symmetry: layered petals, paisley shapes, fine hatching-free scrollwork and a dense border of tiny leaves. Fine detailed linework for adult coloring, no shading, pure white background.
放任不管的话，模型会自动加上柔和色调和阴影，让页面根本没法填色。说两遍——「无阴影、无灰度、纯白背景」——不是多余，而是一种保险。
幼儿用「粗线条，大块开放形状」；学龄儿童用「中等细节线条」；成人页面用「精细线条」。这是决定页面适合什么人群的唯一关键设置。
每个形状完全闭合，能让数字填色App里的油漆桶工具老老实实待在线内——打印出来的效果也更干净。
3:4的页面能均匀适配A4和美国信纸尺寸的边距。用Nano Banana 2按2K生成，整页尺寸下线条依然清晰锐利。
可以——你在BananaBanana上生成的图片版权归你所有，包括用于按需印刷图书。需要注意的是，Amazon KDP等自出版平台要求在上传时披露AI生成内容，请提前规划好这一步。
整页打印请在Nano Banana 2上按2K生成。Lite渲染为1K，适合屏幕显示和快速打样，但在A4尺寸下精细线条可能会略显模糊。
因为提示词没有明确禁止。请明确加上「无阴影、无灰度、无填充、纯白背景」——如果偶尔还是出现杂色，用任意编辑软件做一次色阶调整即可恢复纯黑白。
这里的提示词特意描述的都是温和中性的场景，每张图片也都经过模型的安全过滤。和任何生成内容一样，批量打印给课堂使用前，建议先大致过目一遍。
固定风格描述句——线条粗细、细节程度、背景——每一页只改变场景那一句话。三十条提示词保持措辞一致，才能让这一组图看起来像一本书，而不是三十张各自下载的图片。
